Knee brace



FIG. 1 is a front elevation view of a knee brace showing my new design;

FIG. 2 is a rear elevation of the brace;

FIG. 3 is a left side elevation of the brace;

FIG. 4 is a left side elevation showing the brace about a portion of a leg in dotted lines; shown for illustrative purposes only;

FIG. 5 is a right side elevation;

FIG. 6 is a top plan view of the knee brace;

FIG. 7 is a bottom plan view;

FIG. 8 is a rear view, similar to FIG. 2, with parts broken away for a better showing of the interior design of the front wall shown in FIG. 6 and FIG. 7; and

FIG. 9 is a left side similar to FIG. 3, with parts broken away for a better showing of the interior design. 

The ornamental design for a knee brace, substantially as shown and described. 